Index: release/scripts/startup/bl_ui/space_view3d.py
===================================================================
--- release/scripts/startup/bl_ui/space_view3d.py	(revisione 43485)
+++ release/scripts/startup/bl_ui/space_view3d.py	(copia locale)
@@ -2351,9 +2351,13 @@
                     box.prop(bg, "opacity", slider=True)
                     if bg.view_axis != 'CAMERA':
                         box.prop(bg, "size")
+                        box.prop(bg, "rotate")
                         row = box.row(align=True)
                         row.prop(bg, "offset_x", text="X")
                         row.prop(bg, "offset_y", text="Y")
+                        row = box.row(align=True)
+                        row.prop(bg, "flip_x")
+                        row.prop(bg, "flip_y")
 
 
 class VIEW3D_PT_transform_orientations(Panel):
Index: source/blender/editors/space_view3d/view3d_draw.c
===================================================================
--- source/blender/editors/space_view3d/view3d_draw.c	(revisione 43485)
+++ source/blender/editors/space_view3d/view3d_draw.c	(copia locale)
@@ -1497,7 +1497,7 @@
 	MovieClip *clip;
 	ImBuf *ibuf= NULL, *freeibuf;
 	float vec[4], fac, asp, zoomx, zoomy;
-	float x1, y1, x2, y2, cx, cy;
+	float x1, y1, x2, y2, cx, cy, centx, centy;
 
 
 	for ( bgpic= v3d->bgpicbase.first; bgpic; bgpic= bgpic->next ) {
@@ -1595,6 +1595,8 @@
 			zoomx= (x2-x1)/ibuf->x;
 			zoomy= (y2-y1)/ibuf->y;
 
+			centx = x1 + ((x2 - x1)/2);
+			centy = y1 + ((y2 - y1)/2);
 			/* for some reason; zoomlevels down refuses to use GL_ALPHA_SCALE */
 			if(zoomx < 1.0f || zoomy < 1.0f) {
 				float tzoom= MIN2(zoomx, zoomy);
@@ -1628,7 +1630,20 @@
 			glMatrixMode(GL_MODELVIEW);
 			glPushMatrix();
 			ED_region_pixelspace(ar);
-
+			
+			glTranslatef(centx, centy, 0.0);
+			glRotatef(bgpic->rotate* 180/M_PI, 0, 0, 1);
+			glTranslatef(-centx, -centy, 0.0);
+			
+			if (bgpic->flip & V3D_BGPIC_FLIP_X) {
+				y1 = y1 + (y2-y1);
+				zoomy = (-1) * zoomy;
+			}
+			if (bgpic->flip & V3D_BGPIC_FLIP_Y) {
+				x1 = x1 + (x2-x1);
+				zoomx = (-1) * zoomx;
+			}
+			
 			glPixelZoom(zoomx, zoomy);
 			glColor4f(1.0f, 1.0f, 1.0f, 1.0f-bgpic->blend);
 			glaDrawPixelsTex(x1, y1, ibuf->x, ibuf->y, GL_UNSIGNED_BYTE, ibuf->rect);
Index: source/blender/makesdna/DNA_view3d_types.h
===================================================================
--- source/blender/makesdna/DNA_view3d_types.h	(revisione 43485)
+++ source/blender/makesdna/DNA_view3d_types.h	(copia locale)
@@ -74,7 +74,8 @@
 	struct ImageUser iuser;
 	struct MovieClip *clip;
 	struct MovieClipUser cuser;
-	float xof, yof, size, blend;
+	float xof, yof, size, rotate, blend;
+	int flip;
 	short view;
 	short flag;
 	short source, pad;
@@ -318,6 +319,11 @@
 #define V3D_BGPIC_IMAGE		0
 #define V3D_BGPIC_MOVIE		1
 
+/* BGPic->flip */
+/* may want to use 1 for select ?*/
+#define V3D_BGPIC_FLIP_X		(1<<0)
+#define V3D_BGPIC_FLIP_Y		(1<<1)
+
 #define RV3D_CAMZOOM_MIN -30
 #define RV3D_CAMZOOM_MAX 600
 
Index: source/blender/makesrna/intern/rna_space.c
===================================================================
--- source/blender/makesrna/intern/rna_space.c	(revisione 43485)
+++ source/blender/makesrna/intern/rna_space.c	(copia locale)
@@ -1290,6 +1290,21 @@
 	RNA_def_property_range(prop, 0.0, FLT_MAX);
 	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_VIEW3D, NULL);
 	
+	prop= RNA_def_property(srna, "rotate", PROP_FLOAT, PROP_EULER);
+	RNA_def_property_float_sdna(prop, NULL, "rotate");
+	RNA_def_property_ui_text(prop, "Rotation", "Rotation factor for the background image");
+	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_VIEW3D, NULL);
+
+	prop= RNA_def_property(srna, "flip_x", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flip", V3D_BGPIC_FLIP_X);
+	RNA_def_property_ui_text(prop, "Flip X", "Flip the image according to the X axis");
+	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_VIEW3D, NULL);
+
+	prop= RNA_def_property(srna, "flip_y", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flip", V3D_BGPIC_FLIP_Y);
+	RNA_def_property_ui_text(prop, "Flip Y", "Flip the image according to the Y axis");
+	RNA_def_property_update(prop, NC_SPACE|ND_SPACE_VIEW3D, NULL);
+	
 	prop= RNA_def_property(srna, "opacity", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "blend");
 	RNA_def_property_float_funcs(prop, "rna_BackgroundImage_opacity_get", "rna_BackgroundImage_opacity_set", NULL);